fileName = new String(fileName.getBytes("ISO8859-1"), "UTF-8");
或者
String finalFileName = null; if(StringUtils.contains(userAgent, "MSIE")){//IE浏览器 finalFileName = URLEncoder.encode(fileName,"UTF8"); }else if(StringUtils.contains(userAgent, "Mozilla")){//google,火狐浏览器
finalFileName = new String(fileName.getBytes(), "ISO8859-1");
}else{
finalFileName = URLEncoder.encode(fileName,"UTF8");//其他浏览器 }
原文：http://www.cnblogs.com/valarchie/p/7648675.html